Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO
Here we present results from a long-term model simulation of the 3-D coupled ecosystem model ECOSMO II for a North Sea and Baltic Sea set-up. The model allows both multi-decadal hindcast simulation of the marine system and specific process studies under controlled environmental conditions. Model res...
Published in: | Earth System Dynamics |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2017
|
Subjects: | |
Online Access: | https://doi.org/10.5194/esd-8-801-2017 https://noa.gwlb.de/receive/cop_mods_00009062 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009019/esd-8-801-2017.pdf https://esd.copernicus.org/articles/8/801/2017/esd-8-801-2017.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00009062 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00009062 2023-05-15T17:35:49+02:00 Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO Daewel, Ute Schrum, Corinna 2017-09 electronic https://doi.org/10.5194/esd-8-801-2017 https://noa.gwlb.de/receive/cop_mods_00009062 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009019/esd-8-801-2017.pdf https://esd.copernicus.org/articles/8/801/2017/esd-8-801-2017.pdf eng eng Copernicus Publications Earth System Dynamics -- http://www.earth-syst-dynam.net/ -- http://www.bibliothek.uni-regensburg.de/ezeit/?2578793 -- 2190-4987 https://doi.org/10.5194/esd-8-801-2017 https://noa.gwlb.de/receive/cop_mods_00009062 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009019/esd-8-801-2017.pdf https://esd.copernicus.org/articles/8/801/2017/esd-8-801-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/esd-8-801-2017 2022-02-08T22:57:45Z Here we present results from a long-term model simulation of the 3-D coupled ecosystem model ECOSMO II for a North Sea and Baltic Sea set-up. The model allows both multi-decadal hindcast simulation of the marine system and specific process studies under controlled environmental conditions. Model results have been analysed with respect to long-term multi-decadal variability in both physical and biological parameters with the help of empirical orthogonal function (EOF) analysis. The analysis of a 61-year (1948–2008) hindcast reveals a quasi-decadal variation in salinity, temperature and current fields in the North Sea in addition to singular events of major changes during restricted time frames. These changes in hydrodynamic variables were found to be associated with changes in ecosystem productivity that are temporally aligned with the timing of reported regime shifts in the areas. Our results clearly indicate that for analysing ecosystem productivity, spatially explicit methods are indispensable. Especially in the North Sea, a correlation analysis between atmospheric forcing and primary production (PP) reveals significant correlations between PP and the North Atlantic Oscillation (NAO) and wind forcing for the central part of the region, while the Atlantic Multi-decadal Oscillation (AMO) and air temperature are correlated to long-term changes in PP in the southern North Sea frontal areas. Since correlations cannot serve to identify causal relationship, we performed scenario model runs perturbing the temporal variability in forcing condition to emphasize specifically the role of solar radiation, wind and eutrophication. The results revealed that, although all parameters are relevant for the magnitude of PP in the North Sea and Baltic Sea, the dominant impact on long-term variability and major shifts in ecosystem productivity was introduced by modulations of the wind fields. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Niedersächsisches Online-Archiv NOA Earth System Dynamics 8 3 801 815 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Daewel, Ute Schrum, Corinna Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO |
topic_facet |
article Verlagsveröffentlichung |
description |
Here we present results from a long-term model simulation of the 3-D coupled ecosystem model ECOSMO II for a North Sea and Baltic Sea set-up. The model allows both multi-decadal hindcast simulation of the marine system and specific process studies under controlled environmental conditions. Model results have been analysed with respect to long-term multi-decadal variability in both physical and biological parameters with the help of empirical orthogonal function (EOF) analysis. The analysis of a 61-year (1948–2008) hindcast reveals a quasi-decadal variation in salinity, temperature and current fields in the North Sea in addition to singular events of major changes during restricted time frames. These changes in hydrodynamic variables were found to be associated with changes in ecosystem productivity that are temporally aligned with the timing of reported regime shifts in the areas. Our results clearly indicate that for analysing ecosystem productivity, spatially explicit methods are indispensable. Especially in the North Sea, a correlation analysis between atmospheric forcing and primary production (PP) reveals significant correlations between PP and the North Atlantic Oscillation (NAO) and wind forcing for the central part of the region, while the Atlantic Multi-decadal Oscillation (AMO) and air temperature are correlated to long-term changes in PP in the southern North Sea frontal areas. Since correlations cannot serve to identify causal relationship, we performed scenario model runs perturbing the temporal variability in forcing condition to emphasize specifically the role of solar radiation, wind and eutrophication. The results revealed that, although all parameters are relevant for the magnitude of PP in the North Sea and Baltic Sea, the dominant impact on long-term variability and major shifts in ecosystem productivity was introduced by modulations of the wind fields. |
format |
Article in Journal/Newspaper |
author |
Daewel, Ute Schrum, Corinna |
author_facet |
Daewel, Ute Schrum, Corinna |
author_sort |
Daewel, Ute |
title |
Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO |
title_short |
Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO |
title_full |
Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO |
title_fullStr |
Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO |
title_full_unstemmed |
Low-frequency variability in North Sea and Baltic Sea identified through simulations with the 3-D coupled physical–biogeochemical model ECOSMO |
title_sort |
low-frequency variability in north sea and baltic sea identified through simulations with the 3-d coupled physical–biogeochemical model ecosmo |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/esd-8-801-2017 https://noa.gwlb.de/receive/cop_mods_00009062 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009019/esd-8-801-2017.pdf https://esd.copernicus.org/articles/8/801/2017/esd-8-801-2017.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Earth System Dynamics -- http://www.earth-syst-dynam.net/ -- http://www.bibliothek.uni-regensburg.de/ezeit/?2578793 -- 2190-4987 https://doi.org/10.5194/esd-8-801-2017 https://noa.gwlb.de/receive/cop_mods_00009062 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00009019/esd-8-801-2017.pdf https://esd.copernicus.org/articles/8/801/2017/esd-8-801-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/esd-8-801-2017 |
container_title |
Earth System Dynamics |
container_volume |
8 |
container_issue |
3 |
container_start_page |
801 |
op_container_end_page |
815 |
_version_ |
1766135098454835200 |